Notification device won't connect on WT6000 (Android EMDK)

Hi all,

I've been working on adding beep alerts to our app that runs on the WT6000 and TC8000. I've been following this example: Notification - Zebra Technologies TechDocs

However, whenever I run either my own code or the sample notification project on the WT6000, the notification device will not connect and notifications like beeps and buzzes don't happen.

In the sample application, the status shows "Status: Notification device is not connected". The device info shows:

"isConnected=false, isDefaultDevice=false, isLEDSupported=true, isBeepSupported=true, isVibrateSupported=true"

I've tried updating the OS on the WT6000 and the version of EMDK I'm running on my dev PC, but nothing seems to resolve this issue.

Does anyone know what could be going wrong?